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42 lines
1.3 KiB
42 lines
1.3 KiB
/* |
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* I2C driver for Measurement Specialties MEAS TSYS01 digital temperature sensor |
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*/ |
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#pragma once |
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#include <AP_HAL/AP_HAL.h> |
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#include <AP_HAL/Semaphores.h> |
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#include <AP_HAL/Device.h> |
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#define TSYS01_ADDR 0x77 |
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class TSYS01 { |
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public: |
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bool init(void); |
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float temperature(void) { return _temperature; } // temperature in degrees C |
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bool healthy(void) { // do we have a valid temperature reading? |
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#if CONFIG_HAL_BOARD == HAL_BOARD_SITL |
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return true; |
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#endif |
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return _healthy; |
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} |
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AP_HAL::OwnPtr<AP_HAL::Device> _dev; |
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private: |
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#if CONFIG_HAL_BOARD == HAL_BOARD_SITL |
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float _temperature = 42.42; // degrees C |
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#else |
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float _temperature; // degrees C |
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#endif |
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bool _healthy; // we have a valid temperature reading to report |
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uint16_t _k[5]; // internal calibration for temperature calculation |
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bool _reset(void); // reset device |
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bool _read_prom(void); // read (relevant) internal calibration registers into _k |
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bool _convert(void); // begin an ADC conversion (min:7.40ms typ:8.22ms max:9.04ms) |
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uint32_t _read_adc(void); |
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uint16_t _read_prom_word(uint8_t word); |
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void _timer(void); // update the temperature, called at 20Hz |
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void _calculate(uint32_t adc); // calculate temperature using adc reading and internal calibration |
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};
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